US California DMV CDL Combination Vehicles Test 1

DMV & CDL » Category

Author: TestGru Team (Education Specialist)

20 questions · All questions on one page

Prepared with up-to-date content

DMV California — Cdl Combination DMV — California (USA, State Traffic Law) USA — California State DMV & FMCSA (MUTCD) — USA

What is this test? for California DMV Cdl Combination permit/CDL, USA (MUTCD) — DMV — California (USA, State Traffic Law) level, USA — California.
Is this for you? For driver candidates in California, USA — Cdl Combination permit/CDL (16+, State DMV)
Section: DMV California — Cdl Combination · Education: High School & Adult (16+) · Part: DMV California — Cdl Combination · Country: USA · Region: USA — California

The DMV written test is an important step measuring driver candidates' knowledge of traffic laws, first aid, and vehicle technology.

This test reinforces your theoretical knowledge and provides the fundamentals needed to pass the exam and become a safe driver.

By solving this test of 20 questions, you can both test your knowledge and identify the topics you need to improve.

Question 1

In California, what is a combination vehicle?

A) van

B) tractor plus trailer(s)

C) bus

D) single truck

Question 2

In California, what is a converter dolly?

A) a spare tire

B) device coupling doubles

C) a tool box

D) a light

Question 3

In California, how couple doubles?

A) front first always

B) rear trailer, dolly, front trailer in order

C) no order

D) any order

Question 4

In California, what is the crack-the-whip effect?

A) tire pop

B) rear trailer swings in turns

C) brake lock

D) engine surge

Question 5

In California, how prevent rollover in combos?

A) brake in curve

B) speed through

C) no need

D) slow well below curve speed

Question 6

In California, what is off-tracking in combos?

A) rear follows shorter path

B) speeding

C) tire brand

D) brake wear

Question 7

In California, how check coupling?

A) radio test

B) paint check

C) fifth-wheel jaws locked, no gap

D) tire shine

Question 8

In California, what is trailer hand valve for?

A) lights

B) testing trailer brakes only

C) fueling

D) parking

Question 9

In California, how test trailer emergency brakes?

A) no test

B) drive fast

C) charge, pull supply, tug test

D) visual only

Question 10

In California, what is a shut-off valve for?

A) fuel flow

B) horn

C) controls air to rear in doubles

D) lights

Question 11

In California, how many valves on last trailer?

A) none open (all closed)

B) all open

C) half open

D) one open

Question 12

In California, what is the air line order?

A) one line enough

B) connect service+emergency before moving

C) drive then connect

D) no lines

Question 13

In California, how inspect pintle hook?

A) loose ok

B) no chains

C) rust fine

D) latched, safety chains crossed

Question 14

In California, what are safety chains for?

A) weight

B) looks

C) backup coupling if hook fails

D) noise

Question 15

In California, how brake with empty trailers?

A) no brakes

B) same

C) harder

D) gentler (light trailers lock easily)

Question 16

In California, what is trailers jackknifing?

A) turning wide

B) parking trick

C) tractor-trailer folds in skid

D) coupling step

Question 17

In California, how avoid jackknife?

A) jerk wheel

B) slam brakes

C) speed up

D) steady braking, no sudden moves

Question 18

In California, how handle doubles in wind?

A) ignore

B) slow, extra space, firm grip

C) stop in lane

D) speed up

Question 19

In California, what is rearward amplification?

A) last trailer moves most

B) brake force

C) engine power

D) fuel use

Question 20

In California, how lane change with doubles?

A) tailgate first

B) quick swerve

C) no signal

D) slower, more space, signal long

US California DMV CDL Combination Vehicles Test 1

Test Complete

About This Test